98 ROYAL SOCIETY OF CANADA 



Above the base they continue nearly parallel to the lateral margins of 

 the leaves. Frequently the lateral margins are very slightly infolded 

 near the apex." 



" The branches or possibly the stems of this type, as shown in speci- 

 mens of Whittleseya micro pliylla, are slender rarely dividing at a rather 

 wide angle, apparently naked at some distance below the apices, and 

 probably woody as indicated by rather densely carbonaceous residue. 

 The leaves still attached to the terminal portions of the branches, were 

 sustained by apparently lax, often extensively slender petioles, some- 

 times several times as long as the blade of the leaf. Xo precise correla- 

 tion has yet been made between the Whittleseya and any of the Palaeozoic 

 fruits, one or more genera of which are usually found associated in the 

 same beds." 



" The species already attributed to this genus are Whittleseya 

 elegoMS Newb., W. crassifolia, W. undulata and W. microphylla, Lesq'x, 

 W. Camphelli and W. Lescuriana, D. White." ^ 



Mr. White then proceeds to describe three additional species, viz: 

 W. desiderata and W. hrevifolia from Harrington E., N. S., and W. 

 Dawsoniana from the plant beds at the " fern ledges," St. Jolin, This 

 last is distinguished as follows : — 



" Whittleseya Dawsoniana n. sp. [Plate VI, Figs. 13, 13.] 



" Leaf very small, short, squarrose, broader than long, truncate at 

 the apex, roimd- truncate at the base, thick; nerve bands very broad 1.5 

 mm. — 1.75 mm. in width about 10-12 in number, parallel to the lateral 

 borders, apparently undivided, and forming very broad and very low 

 flat costae, which are contiguous or slightly confluent in the interior of 

 the leaf, each band terminating in a short, broad tooth." .... 



"This leaf... is about 13 mm. long above the petiole and about 

 17 mm. in width at the top, which is slightly wider than the lower por- 

 tion. The specimen, which is slightly deformed and a little crumpled 

 at the base so as not to reveal the petiole, is well marked by the very 

 low, broad, and flat ribs, whose terminations in the apparently short, 

 obtuse teeth, are very obscurely seen along a portion of the distal border. 

 The characters of the teeth are hardly positively determined." 



" The species is named in memory of Sir William Dawson, Canada's 

 most distinguished palseobotanist and one of the great palaeontologists of 

 the world. It is recognized among other broad leaved species of the 

 genus by its small size, relatively great breadth and proportionately very 

 broad bands. Further, the teeth along the distal margin appear to be 



1 Canadian species of the genus Whittleseya, etc.. Ottawa Naturalist, Vol. XV, 

 No. 4, pp. 98-110, July '01. 



